To make uniform the force acting on an terminal tube, to make convenient for carrying and to correspond to with a kind of wire caulking tool even for different thickness of terminal tubes in the case of caulking the terminal tube for attaching an outer tube to engines, clutches, brakes or the like to the outer tube guiding a wire used in automobiles, motorcycle or the like.

In the wire caulking tool caulking the terminal tube for attaching the outer tube 10 to the apparatus such as engines, clutches, brakes or the like to the outer tube 10 guiding the wire 9, this tool is composed of a fixed die 1, a movable die 2 and a tie bolt 3 fastening both dies, and the fixed die 1 and the movable die 2 are provided with tube arranging grooves 4 arranging the outer tube and at least two caulking grooves 5, 6 caulking the terminal tube to the outer tube at the time of fastening both dies with the tie bolt 3.